SYMPOSIA PAPER Published: 01 January 1991
STP17778S

Use of Computer Analysis to Predict and Reduce Liquid Hammer Forces in High Pressure, High Flow Liquid Oxygen Systems

Source

During the advanced and final development phases of rocket engine component and subsystem testing failures are very likely to occur from time to time. To minimize or prevent damage or destruction to the components and to the test facility itself, high pressure oxygen supplied must be cut off rapidly on the order of 100 to 400 milliseconds. However, rapid cutoff of liquid oxygen, as well as, other liquids and high pressure gases can impart large pressure surges and hammer forces. For liquid and gaseous oxygen this phenomenon can initiate ignition and subsequent destruction of test articles as well as facility piping systems.

An additional concern is the use of liquid oxygen pressure and flow control valves required to operate these type of facilities. Pressure differentials across valves and induced turbulence and flow separation must be understood and analyzed during facility design.

Author Information

deQuay, L
Component Test Facility Project Office, National Aeronautics and Space Administration, John C. Stennis Space Center, MS, USA
Scheuermann, PE
Propulsion Test Operations, National Aeronautics and Space Administration, John C. Stennis Space Center, MS, USA
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Details
Developed by Committee: G04
Pages: 414–449
DOI: 10.1520/STP17778S
ISBN-EB: 978-0-8031-5170-3
ISBN-13: 978-0-8031-1461-6